1990 Ford Mustang 5.0 Loss of Oil Pressure when accelerating
#1
1990 Ford Mustang 5.0 Loss of Oil Pressure when accelerating
Hi there
I’ve recently rebuild my 90 mustang 5.0. Was a 302 and was bored 30 over. Primed the oil pump before start up and put about 30 miles on the engine and then noticed my oil pressure gauge kept dropping to zero when I accelerated and on decel and idle it came back up. Brought the vehicle home and noticed some noise from the valve train assuming the oils not getting there? I removed my distributor to look at the shaft and couldn’t tell much. Now I’m wondering if I should run the car again with a gauge hooked up or if I should look towards dropping the oil pan and inspecting the oil pump? I replaced the pump with a normal oe spec melling pump and pick up tube.
I’ve recently rebuild my 90 mustang 5.0. Was a 302 and was bored 30 over. Primed the oil pump before start up and put about 30 miles on the engine and then noticed my oil pressure gauge kept dropping to zero when I accelerated and on decel and idle it came back up. Brought the vehicle home and noticed some noise from the valve train assuming the oils not getting there? I removed my distributor to look at the shaft and couldn’t tell much. Now I’m wondering if I should run the car again with a gauge hooked up or if I should look towards dropping the oil pan and inspecting the oil pump? I replaced the pump with a normal oe spec melling pump and pick up tube.
#5
yeah, for sure check it with a mechanical gauge. they are pretty cheap at the parts store.
i guess the thrust bearing is good? I have seen that cause a loss of pressure on different type engines. I assume that may apply to the 5.0
is the car an auto or manual?
i guess the thrust bearing is good? I have seen that cause a loss of pressure on different type engines. I assume that may apply to the 5.0
is the car an auto or manual?
Last edited by TrimDrip; 04-22-2019 at 09:08 PM.
#7
make sure you didn't blow an oil galley plug out.....there behind the timing cover.....right around where the cam slides in. that will cause the issue you describe. Had it happen more than once, now I tap those holes vs the press in plugs
#9
Any guidance please? On if I should start by draining the oil and cutting open the filter to inspect and filling new oil and check pressure with a gauge or should I remove timing cover and inspect the oil gallery plug?